Fabrication and characterization of CPP-GMR and spin-transfer torque induced magnetic switching:
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| Format: | Abschlussarbeit Buch |
| Sprache: | English |
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2014
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| Schlagworte: | |
| Online-Zugang: | kostenfrei Inhaltsverzeichnis |
| Beschreibung: | Zsfassung in dt. und engl. Sprache |
| Beschreibung: | 87 S. Ill., graph. Darst. |
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| 245 | 1 | 0 | |a Fabrication and characterization of CPP-GMR and spin-transfer torque induced magnetic switching |c von Marjan Samiepour |
| 246 | 1 | 3 | |a Herstellung und Charakterisierung von CPP-GMR und Spin-Transfer-Drehmoment induzierten magnetisches Schalten |
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Datensatz im Suchindex
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| adam_text | FABRICATION AND CHARACTERIZATION OF
CPP-GMR AND SPIN-TRANSFER TORQUE INDUCED
MAGNETIC SWITCHING
DISSERTATION
ZUR ERLANGUNG DES
NATURWISSENSCHAFTLICHEN DOKTORGRADES
DER JULIUS-MAXIMILIANS-UNIVERSITAT WIIRZBURG
VORGELEGT VON
MARJAN SAMIEPOUR
AUS NEYSHABOOR, IRAN
WIIRZBURG 2014
HTTP://D-NB.INFO/1058765566
CONTENTS
ZUSAMMENFASSUNG 1
SUMMARY 3
1 MOTIVATION 5
1.1 INTRODUCTION 5
1.2 APPLICATIONS 6
1.2.1 MAGNETIC HARD DICK DRIVE (HHD) 6
1.2.2 STT-MRAM AND MRAM 7
1.2.3 RF COMPONENTS 10
2 THEORY OF CPP-GMR AND STT 11
2.1 MAGNETIC ANISOTROPY 11
2.1.1 DOMAIN MAGNETIC CONFIGURATION IN A SINGLE LAYER 11
2.1.2 DOMAIN MAGNETIC CONFIGURATION IN MULTILAYER 12
2.1.3 MAGNETIC SHAPE ANISOTROPY IN THE ELLIPTICAL PILLAR 13
2.2 SPIN ACCUMULATION 15
2.3 CPP-GMR 17
2.4 SPIN-TRANSFER TORQUE INDUCED SWITCHING 17
2.4.1 MAGNETIC SWITCHING 19
2.5 PERSISTENT PRECESSION 23
2.6 HALF-METAL 23
3 FABRICATION OF PSEUDO SPIN-VALVE DEVICE 27
3.1 INTRODUCTION 27
3.2 LAYER STACK 29
3.3 FABRICATION OF THE PILLAR USING A RESIST MASK 29
3.4 FABRICATION OF THE PILLAR USING A METAL MASK 33
3.4.1 CROSS-LINKED PMMA 34
3.4.2 OPENING BOTTOM CONTACTS 37
3.4.3 OPENING TOP CONTACTS OF THE PILLAR 38
3.4.4 CONNECTING TOP AND BOTTOM OF THE PILLARS TO BIG CONTACT PADS ....
41
I
II CONTENTS
4 MAGNETORESISTANCE AND CPP-GMR 45
4.1 INTRODUCTION 45
4.2 ELECTRICAL RESISTIVITY 45
4.2.1 MICROFABRICATION OF HALL-BAR 45
4.2.2 MEASUREMENT OF THE ELECTRICAL RESISTIVITY 46
4.3 SPIN-VALVE 48
4.3.1 CPP-GMR MEASUREMENT OF PSEUDO SPIN-VALVES 48
4.3.2 IN-PLANE MAGNETIC FIELD ALONG THE LONG AXIS OF THE PILLAR 50
4.4 CURRENT DEPENDENCE OF CPP-GMR : . . . . 53
4.5 SHAPE ANISOTROPY OF CPP-GMR SPIN-VALVES 54
5 SPIN-TRANSFER TORQUE SWITCHING 57
5.1 INTRODUCTION 57
5.2 STABLE P AND AP STATES 58
5.2.1 MEASUREMENTS AT 120 K 58
5.2.2 MEASUREMENT AT ROOM TEMPERATURE 62
5.3 STABLE PARALLEL STATE 63
5.4 STABLE ANTIPARALLEL STATE 64
5.5 UNSTABLE ANTIPARALLEL AND PARALLEL STATES 66
5.6 DIAGRAM OF THE CRITICAL CURRENT AND THE CRITICAL CURRENT DENSITY 66
6 CONCLUSION AND OUTLOOK 69
A FABRICATION OF THE PILLAR USING A RESIST MASK 71
B FABRICATION OF THE PILLAR USING A METAL MASK (NEW METHOD) 75
C PICTURE GALLERY 79
BIBLIOGRAPHY 88
|
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| spelling | Samiepour, Marjan 1983- Verfasser (DE-588)1059080621 aut Fabrication and characterization of CPP-GMR and spin-transfer torque induced magnetic switching von Marjan Samiepour Herstellung und Charakterisierung von CPP-GMR und Spin-Transfer-Drehmoment induzierten magnetisches Schalten 2014 87 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Zsfassung in dt. und engl. Sprache Würzburg, Univ., Diss., 2014 Spintronik (DE-588)7755384-6 gnd rswk-swf Riesenmagnetowiderstand (DE-588)4591272-5 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Riesenmagnetowiderstand (DE-588)4591272-5 s Spintronik (DE-588)7755384-6 s DE-604 Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:20-opus-102226 https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-102226 Resolving-System kostenfrei Volltext DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027574561&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Samiepour, Marjan 1983- Fabrication and characterization of CPP-GMR and spin-transfer torque induced magnetic switching Spintronik (DE-588)7755384-6 gnd Riesenmagnetowiderstand (DE-588)4591272-5 gnd |
| subject_GND | (DE-588)7755384-6 (DE-588)4591272-5 (DE-588)4113937-9 |
| title | Fabrication and characterization of CPP-GMR and spin-transfer torque induced magnetic switching |
| title_alt | Herstellung und Charakterisierung von CPP-GMR und Spin-Transfer-Drehmoment induzierten magnetisches Schalten |
| title_auth | Fabrication and characterization of CPP-GMR and spin-transfer torque induced magnetic switching |
| title_exact_search | Fabrication and characterization of CPP-GMR and spin-transfer torque induced magnetic switching |
| title_full | Fabrication and characterization of CPP-GMR and spin-transfer torque induced magnetic switching von Marjan Samiepour |
| title_fullStr | Fabrication and characterization of CPP-GMR and spin-transfer torque induced magnetic switching von Marjan Samiepour |
| title_full_unstemmed | Fabrication and characterization of CPP-GMR and spin-transfer torque induced magnetic switching von Marjan Samiepour |
| title_short | Fabrication and characterization of CPP-GMR and spin-transfer torque induced magnetic switching |
| title_sort | fabrication and characterization of cpp gmr and spin transfer torque induced magnetic switching |
| topic | Spintronik (DE-588)7755384-6 gnd Riesenmagnetowiderstand (DE-588)4591272-5 gnd |
| topic_facet | Spintronik Riesenmagnetowiderstand Hochschulschrift |
| url | https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-102226 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027574561&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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